Remove duplicate of configmap (#1206)

* also change the name of the generated cm

pkg/transformer/kubernetes/k8sutils.go

@@ -581,6 +581,30 @@ func (k *Kubernetes) SortServicesFirst(objs *[]runtime.Object) {
 	*objs = ret
 }
 
+// RemoveDupObjects remove objects that are dups...eg. configmaps from env.
+// since we know for sure that the duplication can only happends on ConfigMap, so
+// this code will looks like this for now.
+func (k *Kubernetes) RemoveDupObjects(objs *[]runtime.Object) {
+	var result []runtime.Object
+	exist := map[string]bool{}
+	for _, obj := range *objs {
+		if us, ok := obj.(*api.ConfigMap); ok {
+			k := us.GroupVersionKind().String() + us.GetNamespace() + us.GetName()
+			if exist[k] {
+				log.Debugf("Remove duplicate configmap: %s", us.GetName())
+				continue
+			} else {
+				result = append(result, obj)
+				exist[k] = true
+			}
+		} else {
+			result = append(result, obj)
+		}
+
+	}
+	*objs = result
+}
+
 // SortedKeys Ensure the kubernetes objects are in a consistent order
 func SortedKeys(komposeObject kobject.KomposeObject) []string {
 	var sortedKeys []string

pkg/transformer/kubernetes/kubernetes.go

@@ -250,7 +250,7 @@ func (k *Kubernetes) InitConfigMapForEnv(name string, service kobject.ServiceCon
 			APIVersion: "v1",
 		},
 		ObjectMeta: api.ObjectMeta{
-			Name:   name + "-" + envName,
+			Name:   envName,
 			Labels: transformer.ConfigLabels(name + "-" + envName),
 		},
 		Data: envs,
@@ -835,7 +835,7 @@ func (k *Kubernetes) ConfigEnvs(name string, service kobject.ServiceConfig, opt
 					ValueFrom: &api.EnvVarSource{
 						ConfigMapKeyRef: &api.ConfigMapKeySelector{
 							LocalObjectReference: api.LocalObjectReference{
-								Name: name + "-" + envName,
+								Name: envName,
 							},
 							Key: k,
 						}},
@@ -1097,6 +1097,7 @@ func (k *Kubernetes) Transform(komposeObject kobject.KomposeObject, opt kobject.
 
 	// sort all object so Services are first
 	k.SortServicesFirst(&allobjects)
+	k.RemoveDupObjects(&allobjects)
 
 	return allobjects, nil
 }